Spring suspension for cycles



T. D. KELLY'. SPRING SUSPENSION roR CYCLES.

APPLICATION FILED AUG-v5. 1920.

, Patented Dee. 12,1922.l

2 SHEETS-SHEET 1.'

QT. n. KELLY.

SPRING SUSPENSION FOR CYCLES. l APPLICA llllll LED AUG. 5'. 1920.

Pateted'Dec. 12,

ZSHEETS- SHEET f y wenn; en liga ihm lise THOMAS DhiinriirnLLY, or Hove, ENGLAND.

` SPRING-SSPENSION FOR CYCLES.

Application" ined August 5, 1920.` serial No. 401,495.

To all 107mm t 'may/concern Be it known thntTrroMAs Dimmi. KELLY, :i subject' ot the King ot Grreetlritain, residingv et Hove., Sues-ein' Enfflzind, hes `invented certain neuv end useflilglmprovenientsl in Spring ySuspensionsttor Cycles, ol which the following is e specilieiition.i

This' invention relates to e methodI of spring-ing cycles whereby'thewrider, engine, employed) pedalsnnd all transmission und other gear are insulated and held in suspensionzind free 'from' any road shocks.

For the purpose olI this invention l ernploy a'leeli spring;r or4 springs in supporting the iront and back Wheels with the traine and so connect such leef` spring thetthe liront Wheel forks lund steering'piller 2 ere road shocks aire` tf1-keny up by the lent spring and not communicated in any appreciable degree to the traine.. i

The treme I prefer to' employ consists of e front treme member comprising in pnrt a steering piller which 4is'proyided` with u; depending bifecket to the bese oit Which is rigidly. connected one end of a, lest springer springs which may be straight or curved.

The front Wheel. is provided `with the usual steering post und torlts which post carries the handles as is usual.

The springis connected et its 'free end to n rear traine member carrying the beck Wheel, positioned et i slight ongle thereto,

which regir 'frame member may carry the power engine/find or e `portion of seme and both treme members may carry the sea-t.

l provide ineens ivhereby any side nud, longitudinal'movement cen be prevented by limiting;v themovenient of the horizontal lent f spring by interposinrv zi support between the steering' pillan. and the rear trame member .in the shape ot :i stay suitably shaped.` and branching :it ingles reaching; to the two endsA of ci rod or :i pedal exl'e bracket positioned :it right angles to thedirection ot travel and attached to :in appliance connected to the tree rear end ot the horizontal spring.

My invention will be cleirly understood from rthe followingdescription aided by the enneiied drawings in Which-` lli'gure i perspeo" ot e' motor cycle and showing my invention Vembodied therein.

Figure 2 is sik side elevation (enlarged) of ai portionV of the depending bracket and the lire view ot' e, freine Atree end of the leef spring -for enordinery or push bicycle. i .v i

`According tov my invention the ordinary arranged as is usual in cycles but `to the steering piller 2 is secured' e depending' bracket 3 which is positioned behind the front Wheel and preferably `extends 'just belovv thehorizontel line or" the axle Where its end is bent end torined in the shepeot' :in`

inverted channel for receiving` the thick end ofn leef spring l toivliioh it is firmly `secured. the leaves ot' the springl fitting inside the channel thus 'obviating any sine movement beingi given to the spring. l

The leet'sprine' t as shown,` is composed of three leaves off diii'erent lengths with their ends placedV coincidentally in the channel `end. secured thereto in any suitable manner or by bolt. 5 es shown. y A

l' construct the back forks `6, 6 ttor carryn ing the beck Wheel`7,sucb forks @being of e construction to suiti the et cycle intendedgtlie apex or closed? end yoit such forks is connected to sin erin Shaving turned up eers 9, 9 on the sides,` suoli eri-iis 9.y 9 having bolt holes. The buck forks (i 6 have en upward sloping' direction 'tromthe urni 8 so that the axle of they beck Wheel is carried et :i higher point tbe-n the joint :it which the erin 8 is conne'otedto the sgjirinn fi. l

The free end of the bottoni lent ot the spring 4 is curled. und through the curled end end `the `bolt holes in .the eers is passed 'e bolt 10,' which secures the spring 4 to 'the erin 8, and this assisted by e clip 1l em bracing the spring-4 and the arm 8.

To the bolt 10 on either side oit the eerst) is connectedlinks 12,12, end these are bolted to :i U piece 13 :carrying e cross bar 14 'used .cmi

Cri

vco

in the motor cycle construction shown in Figures 1 and 6.

To the. steering pillar 2 is connected a stay or support 15 which projects downwardly and has its end bifurcated, such bifurcations 16, 16 being opened out and connected to the ends of the cross bar 14. Y

In the case of an ordinary or'push cycle instead of connecting a cross bar to the U piece 13 I form or connect the pedal axle racket 1T, and the bifurcations 16, 16, are

connected to the bracket 17 as at Figure 8.

'Il'iis bifurcated stay or support forms a means of limiting the movement of the spring 4 and prevents any side andI longitudinal movement of same. s To the bifurcations 16, 16 arefsecured two rods '18, 18 and these are continued upwards and rearwards and carry the front of the seat 19. Y

Two rods 20 extend downwardly from the back forks 6; these'rods project forwardly and carryat their upper ends a half elliptic leaf spring 21, the spring 21 being connected at its ends to the rods 20, 20, while the back of the seat 19 is connected at the centre of the spring 21 by a bolt 22 or otherwise.

Ina motor cycle (Figures 1 and 6), as is well known, it is necessary to provide footl boards on each side of the frame, and-to carry these foot boards I provide aframe consisting of a cross bar 23, afiiXed to the bracket 3 by the same bolt 5 that'connects the leaf spring'4, and to the ends of the bar 23 I attach the other ends being attached to the cross bar 14, and to these bars 23 and 24 are connected the usual foot boards.

In a motor cycle, the engine gear etc., Se, may be carried by the bracket 3, .or by the bracket 3 and spring 4, and the petrol tank 26 may be positioned under the seat 19, and a rear seat 27 may be carried by the back wheel axle and the rods 20, as shown in dotted lines in Figure l.

l The stay or support 15 acts as a resistance to the action of the spring 4, and, in consequence, somewhat limits the action of the spring 4, while at the same time ensuring a perfect cushioning during travel over rough roads, and preventing any side or longitudi nal. movement. i

l I claim as `my invention and desire to secure by Letters Patent l. In cycles, a front frame member including a steering pillar and a brack'etdepending `rearwardly downward to a point below the` member comprising a support for the back wheel, sloping forwardly and downwardly from .the hub of said back wheel and a leaf spring secured at its respective ends to the` i lower portion of said bracket and forward 'portion of said y rear frame member. 2. In cycles, a front member including a forward ends of bars 24, 24, the

hub of the front wheel, a rear framel inseam steering pillar and a downwardly extending portion, a rear frame member comprising a support for the back wheel, a leaf spring connected at its respective ends to the lower ends of the frame members, a stay rod rigidly connected to said steering pillar and eX- tending toward the rear frame members, and a link pivotally connected at its ends to said rear frame member and to said stay rod.

3. In cycles, a front frame member including a steering pillar and provided with a rearwardly and downwardly extending lbracket having a channel formed in its lower end, a rea-r frame member comprising a support for the wheel, a leaf spring having one end secured within said channel and its other end to the lower portion of the rear frame member, a stay rod rigidly'connected to said steering pillar and extending toward the rear frame member, and a link pivotally connected at its ends to said rear frame member and to said stay rod.

4. In cycles, a front frame member include ing a steering pillar, a rear frame member comprising a support for the back'wheel, a leaf spring connected at its respective ends tothe lower portion of said frame members,

a stay-rod rigidly connected to said steering pillar, extending toward the rear frame member and provided with a ybifurcated lower end, a cross bar supported by said rear frame and connected at itsends to the bifurcated end of-said stay'rod.

5. In cycles, ya front frame member includ- `ing a steering pillar, a rear frame member including a rod having forked end portions embracing the rear wheel, a bracket depending from said steering pillar, a leaf spring secured at itsrespective ends tosaid bracket and said rear frame member, a cross bar connected to said rear frame member, a stayrod rigidly connected to said steering pillarl and having a bifurcated lower end connected to the ends of said cross bar, a seat, a pair of rods' connected at one end to said seat and Aeach connected at its other end to one of the bifurcated end portions, of said stayrod, a Y

secured at its respective ends to said bracket and said rear frame member, a cross bar connected to said rear frame member, a stay rod rigidly connected to said steering pillar and having a bifurcat-ed lower end connected to the ends of said cross bar, a seat, a leaf spring for supporting said seat, a pair of rods'connected at one end to said seat and each connected at its other end to one of the bfnrcated portions of the stay rod, a second pair of rods each secured at one end to the forked end portions of the rear frame member, and secured at their other ends to said leaf spring.

7. In cycles, a front frame member' including a steering pillar, va rear frame member including a rod having forked end portions embracing the rear wheel, a bracket depending from said steering pillar, a leaf spring secured at its respective ends to said bracket and to said rear frame member, a. pedal bar connected to said rear frame membeiga stayrod rigidly connected to said steering pillar and having a bifurcate'd lower end connected secured at one end to the forked end portions of the rear frame member and resilently secured at their other ends to said seat.

In testimony whereof I have hereunto set my hand in presence `0f two subscribing witnesses.

THOMAS DANIEL KELLY.

lVitnesses:

RICHARD Conn GARDNER, Jnssin MORGAN. 

